Source: Noto Sans Hebrew

U+05A6 Hebrew Accent Merkha Kefula

U+05A6 was added to Unicode in version 2.0 (1996). It belongs to the block U+0590 to U+05FF Hebrew in the U+0000 to U+FFFF Basic Multilingual Plane.

This character is a Nonspacing Mark and is mainly used in the Hebrew script.

The glyph is not a composition. It has a Neutral East Asian Width. In bidirectional context it acts as Nonspacing Mark and is not mirrored. In text U+05A6 behaves as Combining Mark regarding line breaks. It has type Extend for sentence and Extend for word breaks. The Grapheme Cluster Break is Extend.

The Wikipedia has the following information about this codepoint:

Mercha kefula (מֵרְכָא כּפוּלָ֦ה, with variant English spellings) is a rare cantillation mark that occurs 5 times in the Torah (once in Genesis, once in Exodus, once in Leviticus, and twice in Numbers) and once in the Haftarah (for Behaalotecha and for the intermediate Shabbat for Chanukah, in the Book of Zechariah.)
The Hebrew words מֵרְכָא כּפוּלָ֦ה translate into English as double mercha. This name is given since the mark that is used appears like two merchas.

Representations

System	Representation
Nº	1446
UTF-8	D6 A6
UTF-16	05 A6
UTF-32	00 00 05 A6
URL-Quoted	%D6%A6
HTML-Escape	֦
Wrong windows-1252 Mojibake	âÖ¦
Adobe Glyph List	merkhakefulahebrew
Adobe Glyph List	merkhakefulalefthebrew

Elsewhere

Complete Record

Property	Value
Age	2.0 (1996)
Unicode Name	HEBREW ACCENT MERKHA KEFULA
Unicode 1 Name	—
Block	Hebrew
General Category	Nonspacing Mark
Script	Hebrew
Bidirectional Category	Nonspacing Mark
Combining Class	Below
Decomposition Type	None
Decomposition Mapping	Hebrew Accent Merkha Kefula
Lowercase	✘
Simple Lowercase Mapping	Hebrew Accent Merkha Kefula
Lowercase Mapping	Hebrew Accent Merkha Kefula
Uppercase	✘
Simple Uppercase Mapping	Hebrew Accent Merkha Kefula
Uppercase Mapping	Hebrew Accent Merkha Kefula
Simple Titlecase Mapping	Hebrew Accent Merkha Kefula
Titlecase Mapping	Hebrew Accent Merkha Kefula
Case Folding	Hebrew Accent Merkha Kefula
ASCII Hex Digit	✘
Alphabetic	✘
Bidi Control	✘
Bidi Mirrored	✘
Composition Exclusion	✘
Case Ignorable	✔
Changes When Casefolded	✘
Changes When Casemapped	✘
Changes When NFKC Casefolded	✘
Changes When Lowercased	✘
Changes When Titlecased	✘
Changes When Uppercased	✘
Cased	✘
Full Composition Exclusion	✘
Default Ignorable Code Point	✘
Dash	✘
Deprecated	✘
Diacritic	✔
Emoji Modifier Base	✘
Emoji Component	✘
Emoji Modifier	✘
Emoji Presentation	✘
Emoji	✘
Extender	✘
Extended Pictographic	✘
FC NFKC Closure	Hebrew Accent Merkha Kefula
Grapheme Cluster Break	Extend
Grapheme Base	✘
Grapheme Extend	✔
Grapheme Link	✘
Hex Digit	✘
Hyphen	✘
ID Continue	✔
ID Start	✘
IDS Binary Operator	✘
IDS Trinary Operator and	✘
Ideographic	✘
Indic Mantra Category	—
Indic Positional Category	NA
Indic Syllabic Category	Other
Jamo Short Name	—
Join Control	✘
Logical Order Exception	✘
Math	✘
Noncharacter Code Point	✘
NFC Quick Check	Yes
NFD Quick Check	Yes
NFKC Casefold	Hebrew Accent Merkha Kefula
NFKC Quick Check	Yes
NFKD Quick Check	Yes
Other Alphabetic	✘
Other Default Ignorable Code Point	✘
Other Grapheme Extend	✘
Other ID Continue	✘
Other ID Start	✘
Other Lowercase	✘
Other Math	✘
Other Uppercase	✘
Prepended Concatenation Mark	✘
Pattern Syntax	✘
Pattern White Space	✘
Quotation Mark	✘
Regional Indicator	✘
Radical	✘
Sentence Break	Extend
Soft Dotted	✘
Sentence Terminal	✘
Terminal Punctuation	✘
Unified Ideograph	✘
Variation Selector	✘
Word Break	Extend
White Space	✘
XID Continue	✔
XID Start	✘
Expands On NFC	✘
Expands On NFD	✘
Expands On NFKC	✘
Expands On NFKD	✘
Bidi Paired Bracket	Hebrew Accent Merkha Kefula
Bidi Paired Bracket Type	None
East Asian Width	Neutral
Hangul Syllable Type	Not Applicable
ISO 10646 Comment	—
Joining Group	No_Joining_Group
Joining Type	Transparent
Line Break	Combining Mark
Numeric Type	None
Numeric Value	not a number
Simple Case Folding	Hebrew Accent Merkha Kefula
Script Extension
Vertical Orientation	R